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Vishay General Semiconductor - Diodes Division SMBJ7.0AHM3_A/I
- Part No.:
- SMBJ7.0AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0AHM3_A/I.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
SMBJ7.0AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMBJ7.0AHM3_A/I datasheet, SMBJ7.0AHM3_A/I pinout, SMBJ7.0AHM3_A/I application, or SMBJ7.0AHM3_A/I equivalent, key selection considerations include its halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification readiness, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until transient overvoltage exceeds VBR, then avalanches to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ps), critical for suppressing ESD and inductive switching spikes.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation up to 150 °C junction temperature. The device supports repetitive surge duty cycle of 0.01 % and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before leakage exceeds 200 µA; sets upper limit for safe DC bias in protected line. |
| VBR @ IT = 10 mA | 7.78–8.60 V - Verified breakdown range ensuring consistent clamping onset across production lots under standard test conditions. |
| VC @ IPPM = 50.0 A | 12.0 V - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by downstream IC or MOSFET. |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 µs waveform; determines survivability against lightning-induced surges per IEC 61000-4-5. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inrush or fault currents in power rail protection. |
| TJ max. | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node in unidirectional configuration; forms return path during clamping. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to line being protected (e.g., 12 V rail or sensor output); avalanche conduction occurs from cathode to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without external series impedance. |
| 12.0 V clamping voltage at 50 A | Keeps protected logic-level inputs (e.g., MCU GPIO, CAN transceiver pins) below absolute maximum ratings during transient events. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets automotive and industrial environmental compliance requirements including ELV and China RoHS II without compromising thermal or electrical performance. |
| AEC-Q101 qualification ready | Base P/NHM3_X variants are fully qualified per AEC-Q101 Rev D; supports automotive subsystems requiring stress-tested reliability. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirement and supports standard lead-free SMT assembly processes without moisture-related delamination risk. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 12 V supply rail and LIN bus interface from load dump and inductive kickback in BCMs. IC Role / Device Role: Unidirectional TVS placed between power rail and ground, clamping transients before they reach MCU and transceiver ICs. Use Value: Limits voltage to ≤12.0 V during 100 A/10 ms load dump event, preventing latch-up or gate oxide damage in 3.3 V/5 V logic devices. |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges in programmable logic controllers. IC Role / Device Role: Standoff-rated TVS on input front-end, working with series resistor and optocoupler to meet IEC 61000-4-4 EFT immunity. Use Value: Maintains <200 µA leakage at 24 V nominal, ensuring clean logic threshold detection while surviving repeated 4 kV EFT bursts. |
| Consumer Power Adapter Output | Automotive Sensor Signal Line |
|
Use Scenario: Safeguarding USB-C PD port VBUS line against hot-plug transients and adapter output instability. IC Role / Device Role: Secondary-level TVS after primary DC-DC converter, absorbing residual overshoot before Type-C controller IC. Use Value: Clamps 70 V ring wave transients to <12 V within nanoseconds, preserving USB PD communication integrity and preventing VCONN latch-up. |
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to engine control units via long harnesses. IC Role / Device Role: Low-capacitance unidirectional TVS on sensor signal line (e.g., 0–5 V ratiometric output), referenced to sensor ground. Use Value: Adds <0.5 pF parasitic capacitance (per Vishay typical curve Fig. 4), avoiding signal distortion in 10 kHz bandwidth sensor signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-E3/52 | RoHS-compliant but not halogen-free; no AEC-Q101 qualification path; same electrical specs and SMB package. | Preferred for commercial-grade power supplies where halogen content and automotive qualification are not mandated. | Select when cost sensitivity outweighs environmental or automotive compliance requirements. |
| SAC7.0 | Same VWM (7.0 V) and VC (12.0 V), but in smaller SOD-123 package (lower power: 400 W PPPM); different thermal resistance (RθJA = 150 °C/W). | Suitable only for low-energy transients (e.g., ESD-only protection), not for 600 W surge events like load dump. | Choose only for space-constrained PCBs with verified low-surge-risk environments and validated thermal margin. |
Compared with SMBJ7.0AHM3_A/I, the E3 variant trades halogen-free status for lower unit cost in non-automotive applications, while SAC7.0 sacrifices surge robustness and thermal capability for footprint reduction - neither offers drop-in replacement without layout or derating review.
Availability
SMBJ7.0AHM3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and consumer power adapter designs requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification readiness.
Supply support for SMBJ7.0AHM3_A/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where sustained surge immunity and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ7.0AHM3_A/I at its rated peak pulse current?
The SMBJ7.0AHM3_A/I has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 50.0 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience more than 12.0 V during such transient events - critical for safeguarding 3.3 V or 5 V logic interfaces downstream of the SMBJ7.0AHM3_A/I.
Does SMBJ7.0AHM3_A/I meet automotive qualification standards?
The SMBJ7.0AHM3_A/I uses the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification readiness. While the base part number itself is not automatically qualified, Vishay's HM3_X variants (where "X" denotes revision code A, B, etc.) are explicitly tested and certified to AEC-Q101 Rev D. Customers must specify the full qualified part number (e.g., SMBJ7.0AHM3_A) to receive AEC-Q101-compliant units.
How does the SMBJ7.0AHM3_A/I differ from the SMBJ7.0A-E3/52 variant?
The SMBJ7.0AHM3_A/I differs from SMBJ7.0A-E3/52 in three key ways: it is halogen-free (vs. standard RoHS), carries the HM3 suffix denoting AEC-Q101 qualification path, and ships in 13" tape-and-reel (I-mode) versus 7" (52-mode). Electrically and dimensionally, both share identical VWM, VBR, VC, and SMB package - making them interchangeable only where halogen content and automotive qualification are not required.
What is the thermal resistance from junction to ambient for SMBJ7.0AHM3_A/I?
The SMBJ7.0AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value assumes no additional heatsinking and defines the temperature rise above ambient per watt of steady-state power dissipation - important for validating long-term reliability in high-temperature enclosures.
Can SMBJ7.0AHM3_A/I be used in bidirectional transient protection applications?
No - SMBJ7.0AHM3_A/I is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMBJ7.0CA). Using SMBJ7.0AHM3_A/I in bidirectional circuits would result in forward conduction during negative transients, potentially damaging the device or failing to clamp. Always match suffix ("A" vs. "CA") to system polarity requirements.
SMBJ7.0AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ7.0AHM3_A/I FAQ
1.How can I place an order for SMBJ7.0AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0AHM3_A/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ7.0AHM3_A/I reliable?
The price and inventory of SMBJ7.0AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.0AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0AHM3_A/I?
SMBJ7.0AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0AHM3_A/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ7.0AHM3_A/I?
For technical support, including SMBJ7.0AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ7.0AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0AHM3_A/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ7.0AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.0AHM3_A/I?
All SMBJ7.0AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0AHM3_A/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ7.0AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ7.0AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0AHM3_A/I Tags
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Diodes Incorporated
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